eprintid: 6791
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/67/91
datestamp: 2023-11-09 16:18:35
lastmod: 2023-11-09 16:18:35
status_changed: 2023-11-09 16:07:40
type: article
metadata_visibility: show
creators_name: Gouveia, A.S.L.
creators_name: Oliveira, F.S.
creators_name: Kurnia, K.A.
creators_name: Marrucho, I.M.
title: Deep Eutectic Solvents as Azeotrope Breakers: Liquid-Liquid Extraction and COSMO-RS Prediction
ispublished: pub
keywords: Aromatic compounds; Aromatic hydrocarbons; Aromatization; Atmospheric chemistry; Atmospheric pressure; Chlorine compounds; Eutectics; Hydrogen bonds; Liquids; Mixtures; Nuclear magnetic resonance spectroscopy; Organic acids; Phase equilibria; Salts; Solvent extraction; Solvents; Thermodynamic properties, Azeotropic mixture; Conductor-like screening model for real solvents; COSMO-RS; Deep eutectic solvents; Distribution coefficient; Hydrogen bond acceptors; Liquid-liquid extraction; Tetrabutyl-ammonium chloride, Extraction
note: cited By 96
abstract: The efficient and sustainable separation of azeotropic mixtures remains a challenge in chemical engineering. In this work, the performance of benign solvents, namely deep eutectic solvents (DES), in the separation of aromatic-aliphatic hydrocarbon azeotropic mixtures via liquid-liquid extraction (LLE) was evaluated. The DES studied in this work were based on different ammonium salts (cholinium chloride, ChCl, benzylcholinium chloride, BzChCl, and tetrabutylammonium chloride, N4444Cl) as hydrogen bond acceptor (HBA) and one organic acid (levulinic acid, LevA) as hydrogen bond donor (HBD), always in the mole ratio of 1 HBA:2 HBD. The thermophysical properties, namely density and viscosity, of the three used DES were measured in the temperature range T = (293.15 up to 353.15) K and at atmospheric pressure. The phase equilibria diagrams of all ternary systems were determined at T = 298.15 K and at atmospheric pressure using 1H NMR spectroscopy. The results showed that the introduction of a more hydrophobic HBA in the DES promotes the improvement of the distribution coefficient, while playing with the aromaticity of the DES leads to higher selectivity. In addition, the performance of the predictive conductor-like screening model for real solvent (COSMO-RS) model in the description of these systems was also evaluated. COSMO-RS is capable of quantitatively predicting the phase behavior and tie-lines for ternary mixtures containing DES as well as of estimating the trend of distribution ratio and selectivity. © 2016 American Chemical Society.
date: 2016
publisher: American Chemical Society
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989964593&doi=10.1021%2facssuschemeng.6b01542&partnerID=40&md5=7d6789b46415fe7305ddac99f046538f
id_number: 10.1021/acssuschemeng.6b01542
full_text_status: none
publication: ACS Sustainable Chemistry and Engineering
volume: 4
number: 10
pagerange: 5640-5650
refereed: TRUE
issn: 21680485
citation:   Gouveia, A.S.L. and Oliveira, F.S. and Kurnia, K.A. and Marrucho, I.M.  (2016) Deep Eutectic Solvents as Azeotrope Breakers: Liquid-Liquid Extraction and COSMO-RS Prediction.  ACS Sustainable Chemistry and Engineering, 4 (10).  pp. 5640-5650.  ISSN 21680485